A Lattice Boltzmann Simulation of Contact Line Motion and Internal Fluid Flows in an Evaporating Droplet on Homogenous Substrates

2012 ◽  
Vol 45 (3) ◽  
pp. 155-165
Author(s):  
Rong-Juan Li ◽  
Yoshio Morozumi
Keyword(s):  
Contact Line ◽  
Lattice Boltzmann ◽  
Fluid Flows ◽  
Lattice Boltzmann Simulation ◽  
Internal Fluid ◽  
Contact Line Motion

Lattice-Boltzmann Simulation of Two-Phase Fluid Flows

1998 ◽  
Vol 09 (08) ◽  
pp. 1383-1391 ◽  
Author(s):  
Yu Chen ◽  
Shulong Teng ◽  
Takauki Shukuwa ◽  
Hirotada Ohashi
Keyword(s):  
Lattice Boltzmann ◽  
Fluid Flows ◽  
Navier Stokes ◽  
Interface Model ◽  
Two Phase ◽  
Navier Stokes Equation ◽  
Lattice Boltzmann Simulation ◽  
Dam Breaking ◽  
Volumetric Stress ◽  
Phase Fluid

A model with a volumetric stress tensor added to the Navier–Stokes Equation is used to study two-phase fluid flows. The implementation of such an interface model into the lattice-Boltzmann equation is derived from the continuous Boltzmann BGK equation with an external force term, by using the discrete coordinate method. Numerical simulations are carried out for phase separation and "dam breaking" phenomena.

Contact line motion without slip in lattice Boltzmann simulations

2011 ◽  
Vol 66 (14) ◽  
pp. 3452-3458 ◽  
Author(s):  
M.R. Kamali ◽  
J.J.J. Gillissen ◽  
S. Sundaresan ◽  
H.E.A. Van den Akker
Keyword(s):  
Contact Line ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Simulations ◽  
Contact Line Motion

3D Lattice Boltzmann Simulation of Droplet Evaporation on Patterned Surfaces: Study of Pinning-Depinning Mechanism

2019 ◽  
Author(s):  
Boheng Dong ◽  
Fuxian Wang ◽  
Xinya Zhang ◽  
Xiang Jiang
Keyword(s):  
Contact Line ◽  
Lattice Boltzmann ◽  
Droplet Evaporation ◽  
Force Balance ◽  
Patterned Surfaces ◽  
Stick Slip ◽  
3D Space ◽  
Lattice Boltzmann Simulation ◽  
Evaporation Heat ◽  
Boltzmann Method

The liquid-vapor phase change lattice Boltzmann method is used to investigate the pinning-depinning mechanism of the contact line during droplet evaporation on the stripe-patterned surfaces in 3D space. Considering the curvature of the contact line and the direction of the unbalanced Young’s force, the local force balance theory near the stripe boundary is proposed to explain the steady state of the droplets on the stripe-patterned surfaces. An equation is proposed to evaluate the characteristic contact angle of the stabilized droplets. During the evaporation of the droplet, the stick-slip-jump behavior and the CCR-Mixed-CCA mode can be well captured by the lattice Boltzmann simulation. When the contact line is pinned to the stripe boundary, the contact line in the direction perpendicular to the stripes is slowly moving while the curvature of the contact line is gradually increasing. The gradually increasing curvature of the contact line accelerates the movement of the contact line, and the final contact line is detached from the stripe boundary. The research results provide theoretical support and guidance for the design, improvement and application of patterned surfaces in the field of micro-fluidic and evaporation heat transfer.

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